Feed-water heater and water-heating system



(N Modei) 2 SheetsSheet 1.

J. HERVEY. FEED WATER HEATER AND WATER HEATING SYSTEM. No, 587,055.Patented July 27,1897

(No Model.) 2 SheetsShet 2.

J. HERVEY. EEED WATER HEATER AND WATER HEATING SYSTEM. 1%. 587,055Pgniented July 27, 1897.

Mia/EMMA UNITED STATES ATENT @FFICE.

JOHN HERVEY, OF KANSAS CITY, KANSAS.

FEED-WATER HEATER AND WATER-HEATING SYSTEM.

SPECIFICATION forming part of Letters Patent No. 587,055, dated July2'7, 1897. Application filed December 27, 1895. Serialll'o. 573,486. (Nomodel.)

To aZZ whom, it may concern.-

Be it known that I, JOHN HERVEY, a citizen of the United States,residing at Kansas City,

' in the county of Wyandotte and State of Kansas, have invented certainnew and useful Improvements in Means for I-IeatingVVater for Boiler-Feedand Hotater Heater Systems, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to a new and useful improvement inmeans forheating water for boiler-feed and hot-waterheater systems; and itconsists in the constructionand arrangement of parts hereinafterdescribed, and definitely pointed out in the claim.

The aim and purpose of this invention is to utilize the gases ofcombustion from a steamboiler furnace as they pass through the smokearchor back connection for the passage of the gases of combustion into therear end of the boiler-tubes to heat a coil of pipes filled with water,which will in turn supply the hot water for a water-heating system andto heat feedwater for the boiler.

Another object of my invention is to provide a Water-heating andfeed-water system which can be easily heated from the gases ofcombustion which have heretofore been wasted without requiringadditional fuel and a system which is easily controlled and whichprovides automatic means for supplying the heating-coils with water whenthe supply is turned off to' prevent injuryto the coil by overheating. I

These objects and others not heretofore specified are accomplished bythe construction illustrated in the accompanying drawings, wherein likeletters of reference indicate corresponding parts in the several views,and in whichv I Figurel is a diagrammatic view of my invention appliedto the back connection of a steam-boiler furnace.

view of the device detached from the furnace- Fig. 2 is a perspectiveFig. 3 is a detail sectional View of the back connection of asteam-boiler furnace with the heating-coil applied thereto, and Fig. 4is a detail section of the check-valve.

A represents a horizontal tubular steamboiler having the ordinary tubes(not shown) through which the gases of combustion pass;

A, the f urnace-door a, the ash-pit door; a, the ash-pit; B, the grate;b, the steam-dome; B, the bridge-wall b, the combustion-chamber; O, theback connection for the passage of the gases of combustion into the rearof the tubes; 0, the line above the boiler, and c the uptake. the backconnection, are of the ordinary construction as now used in steam-boilerfurnaces. This back connection C has its top cut away, forming anopening 0', and over this opening is placed the coil D, as shown inFigs. 1 and 3. This coil is covered on its top with asbestos or othersuitable non-combustible material D, and the coil and its packing make atight joint in the opening in the back connection, so that no gases ofcombustion can pass through theopening 0, but will all pass through thefines in the boiler, as plainly shown in Figs. 1 and 3. It will thus beseen from the above that none of the gases of combustion are wasted, buttheir passage through this back connection is simply used to heat thewater-coil which supplies the hot water for the heating systemandfeed-water.

ater is fed into the coil D through the feed-pipe E, which connects withthe watermain or other source of supply, and the supply is controlled bythe valve e. The end of These parts, with the exception of to a verticalpipe F, and the upper end of this pipe is connected to the horizontalpipe f, which leads into the tank G, which is located at the highestpoint of the hot-water heating system.

G is a pipe leading from the tank to the various coils g, located in thedifferent parts of the building to be heated by this system, and thispipe is extended downward and connects with the feed-pipe E at g betweenthe controlling-valve e and the coil.

H is a pipe leading from the tank to the boiler-supply, which providesheated water for the same.

I is a safety return-pipe leading from the bottom of the tank direct tothe coil. This safety-pipe is controlled by the check-valve i, (plainlyshown in Fig. 4,) which consists of the valve-seat J and thegravity-Valve J, all of the ordinary construction. This valve is soconstructed and arranged that when the controlling-valve e is turned onthe pressure of the water from the supply-pipe passing into the coilwill keep the check-valve closed but if the water from the main supplyshould be turned olf or stopped for some reason then the pressure on thecheck-valve would cease and the weight of the water in the pipe I wouldraise the valve J and the water would rush into the coil and prevent thesame from becoming overheated orburned out. This water then in the coilwould become heated and rise up in the pipe F and the water wouldcirculate as if the supply was still on.

It is sometimes desirable to connect the furnaces in batteries. Then acoil can be utilized foreach back connection. I have shown such aconstruction in Fig. 2,wherein a branch E from the supply-pipe leads toa second coil D, and this pipe is controlled by the valve 0. This secondcoil is placed over the back connection of the second furnace, and itsrear end is connected to the vertical pipe F, which leads to thehorizontal pipe f, leading into the tank. This second coil is alsoprotected by a branch I", leading from the safety-pipe I, and iscontrolled by a checkvalve 2" in a similar manner.

It is sometimes desirable to use one furnace and coil only, and for thatpurpose I provide the valves K K in the return-pipe from thewater-heating system and the valves 70 7a in the safety return-pipes.Now if only the first coil D is to be used, there being no fire in thesecond furnace, the valve 6' is closed, also the valve K in thereturn-pipe and the valve k in the safety-pipe, which will entirelydisconnect one coil from the other. These coils can be once more unitedby simply opening these valves. 1 also provide a valve Lin the pipe f,which can be used in this connection, it necessary. Although I haveshown but two coils, it is obvious that I could have any number offurnaces and coils by simply connecting them by suitable pipes.

M is a safety-valve located at the top of the tank for releasing anysurplus steam which might accumulate in the tank.

I am awarethat many minor changes can be made in the construction andarrangement of parts herein shown and described without in the leastdeparting from the nature and principles of my invention.

IVhat I claim as new, and desire to secure by Letters Patent, is

The combination with a water-heating system, a feed-water system forboilers, a steamboiler furnace and the back connection of the furnacehaving a cut-away portion at the top of the connection forming anopening, of a water-coil connected to the water-heating sys tem restingover the cut-away portion and forming a cover for the opening a pipeleadin g from the water-heatin g system to the feedwatersystem, and anon-combustible packing secured to the coil, the packing and coilforming an air-tight cover for the cut-away portion so that the productsof combustion will pursue their normal course back through the lines ofthe boiler, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN IIERVEY.

Witnesses:

ELLEN Runs, KITTIE REES.

